Actually, I’m using any default MIRROR properties. It’s just “reflective” and “absorbing” with no coatings. Still some power loss..
Thanks David,I mistyped above and I am actually NOT using any of the MIRROR properties. Just pure reflective and absorbing. Still wondering where the missing power has gone. I’ve tried to use the Ideal coatings a bit and something is not working right, as the flux on the receiver doesn’t change. I need 95% reflective and 5% absorbing. No transmittance.Thanks!Josh
Thanks Dave, it looks like you have the coating set for transmitting 95%. How do I set for reflecting 95% and absorbing 5%? I used the below, based on the documentation:IDEAL Heliostat_ref 0 0.95If these are not correct, then something in my process of using the coatings needs work. Thanks,Josh
@David.Nguyen, Thanks again for the input. Finally got this sorted out.The reason my IDEAL coating with 95% reflection/5% absorption didn’t seem to work is because a surface (in my case, the main reflecting face of a “Rectangular Volume” object) set to “Reflective” with Coating = “None” apparently includes as default around a 6% absorption loss / 94% reflectivity, as you noted above. And I did indeed have the material set to “MIRROR” in the Component Editor.What I was seeing is that using the excellent Path Analysis feature, my test surface with 95% reflective coating actually had slightly higher Flux Out and % than with the coating set to “None”. However, a test coating of 50% reflectivity and 50% absorption cut the Flux Out nearly in half. When I created a new IDEAL coating with “0 1”, i.e. 100% reflectivity, as you mentioned then the Flux Out for the test surface was the highest, and the Total Flux for the whole system finally equaled the Flux In, and all fluxes summed to 100%! This
On the same page referenced above, https://support.zemax.com/hc/en-us/articles/1500005576822-Rotation-Matrix-and-Tilt-About-X-Y-Z-in-OpticStudioin the section “From given vector (L,M,N) to Tilt About X/Y/Z”,I believe the extrinsic calculations below:Then we can get Tilt About Z/Y as below. Tilt About Z= ATAN2(M,L) Tilt About Y = ACOS(N)have an error and the second line should instead read:Tilt About Z= ATAN2(L,M)I needed to implement both the extrinsic formulas and also the intrinsic formulas earlier in the same section. The intrinsic worked no problem (had actually derived this independently long ago with the same results), and I was only able to get the extrinsic formula shown to work after swapping L and M. A bit more derivation in that section would have been helpful for figuring this out. Great article otherwise!
Did a solution for this ever get found?I’m also not seeing it show up in the User Analysis menu. Premium license, not sure about Premium Subscription.Also tried changing the name of one of the existing four default analyses (shown below) as a test. The name didn’t change in the User Analysis menu.
Hi, is there an easy way to hide ALL the rays, so I can just see the objects?Thanks!
Turns out it’s “#0”, which is display no rays :)
Thanks Sean, helpful response!
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